Catheterizing instrument



Feb. 18, 1930. R. H .fwAPPLER CATHETERIZING INSTRUMENT Filed July 20, 1928 INVENTOR e'n/MIJE W Patented Feb. 18, 1930 yUNITED STATES REINHOLD n. WArrLnn, or YoNKEnsNEW YORK GATHETERIZING INSTRUMENT Application filed July 20,

My present invention relates generally to icate mechanism of the character heretofore generally employed for controlling the-gui-dance and deflection of the inserted catheter.

An instrument constructed in accordance with my present invention embodies an endoscopic tube with a fenestra toward one side of its inner end, and means for providing illuminated vision through said tube of the field outside of said fenestra', said means including a tubular element within the endoscopic tube. It is a particular feature'of my invention to construct and arrange the parts just mentioned in such a manner that a catheter may be efficiently and controllably guidedV through the endoscopic tube and out of said fenestra into the illuminated and visible field.

More particularly, it is a feature of my invention to construct the inner tubular element of smaller cross-section than that of they rangement in such a manner that the catheter will enter the field at an efficient andproper point with respect to the objective lensv of the sighting means. AMore particularly, my invention is such that the inserted catheter is deflected into the illuminated field at a point provide the foregoing construction `and ar.

waaserial No. 294,235.

properly and suitably in advance of the objective of la telescopic tube. Another feature lies in providing an arrangement whereby the longitudinal adjustment ofthe inner tubular element will automatically control the degree of deflection of the catheter. In this way all auxiliary mechanism for delecting and guiding thev catheter may be dispensed with and as a result the entire construction may be more compact and staunch.

For the attainment of the foregoing objects and such other objects as may hereinafter appear 'or be pointed out, I have yconstructed several embodiments of my invention and illustrated in the 'accompanying drawings in which`- Figure 1 is a longitudinal view, partly in section, of the inner end of an instrument of the present character; v Figure 2 is a view similar to Figure 1 showing an inserted catheter adjusted to a different deflection; f

Figure 3Y is a lcross-sectional View taken substantially along the line 3 3 of Figure 2;

Figure 4 is a view similar to Figures 1 and 2 showing a modification;

Figure 5 is a cross-section taken substantially along the line 5 5 o-f Figurey 4 ;v and Figure 6 is a view similar to Figure 4 showing a further modification. g

In Figures 1 andV 2 I have shown one/type of endoscopic tube in combination with one type of sighting` and illuminating means'.v The endoscopic tube is shown as elliptical or'oval infcross-section, but this shape is not absolutely essential. eled to provide an oblique fenestra 11 which is obviously rarranged toward one side'of the inner end ofthe tube 10. n

' I/Vithin the ltube 10 I have shown a tubular element 12 which may be constructed inthe manner shown by me in my Patent' No. 1,680,491. A lamp 13, of smaller cross-section-than 'that ofthe tubular element 12, is mounted upon the inner end of the latterandy wholly within the calibre of the latter. Immediately behind the lamprl?) is an objective lens 14 which commands a. field of vision obliquely forward and substantially defined Its inner end is fbev-L defined is efficiently illuminated by the lamp f yThe tubular element 12 is of such a size that when it is arranged along the relatively short side 17 of the tube 10, aA space is pro-V l vided between the element 12 and the relayWhen thelinstrument of Figures'rl andV 2 V tivelylong and unfenestrated` side 18 of the tube 10,-'which space permitsthe-,passage Vof* a catheter 19 therethrough. Such catheter is ofthe well known typerwhich is sufficiently` rigid to be guided longitudinally'by"pressure space for guiding the catheter eiiicientlyand `Acontrollably out of the fenestra 11 and'into.

the field of vision. In the form of Figures yland 2 I make use of the rounded tip 120 of the lamp 13, this rounded tip being obviously at theextreme inner end of the tubular ele-n ment 12. 'f I also Vbend ,the eXtreme end 21 of tends fromthewall`18toward the field of is employed, "the catheter 19 is inserted and passed through the space provided therefor," rand at the inner end of'this space the catheter encounters the abutment 21; This'abutment presents an inclined 'surface to the tip ofthe catheter and deflects the lat-ter yagainst the roundedrtip 20 of the tubularelement12rand element 12 and into the field of' vision. Thisl deflection and guidance is staunch and far` fio..

" generally eiected by Separate andldelicate thence across the-innerY end of the tubular more efficient than the deiiection heretofore mechanism which must be independently controlled from the rear :end of the device. It

c is ktobe noted that the tip of the catheter V19V lentersltheziield of vision at a proper distance fromthejobjective 14,V thereby greatly im-V) proving theV visibility and accurate controly vrof thisoperative tip of'v the catheter.

'Upon reference to Figure 2 it will benoted how aslight retraction of the inner elementv 12 will effect a less deflection of thecatheter 19.-` The element 12 is longitudinally adjustable Vwithin the endoscopicltubeflv() andthis slight retractionis an extremelyy simple inat-y Hter. lBy thus retracting the elementi 12, thev distance between the. roundedgtip l20 land 'the Y abutment 21=is Vslightly increased, andas `a i result, thedeection of the catheter'lQifwhen the ttip thereofy encounters therabutment-215l 60,

is slightl Aless in degreej `Thiscontroloiil the degre'eo deflectionis equally asl staunch vand" efiicientv as the entire construction' hereby 'pro-V vided for guiding-and deiiecting thecatheter,

`In' Figure 4 I haveshown an endoscopicV tube: which-isof aslightly different char-vrv vact-er and which is provided with a fenestra 23 on one side of the inner end.'V The eXtreme tip of the endoscopic tube 22 is-'in thiscase sealed andcapped as at 24 to provide a nose Y end of the fenestra 23 so as to illuminate vthe n.

field of vision outside of said fenestra. f 1

Y In the instrument of Eigure 4I have pro c Y K videdan' inner tubular element 26 positioned a lat thecrearv end and which is atthe same timer Y suiiiciently bendable to g permit i 'guidance thereof by deflection of thehforward endif;` g

, Inac'cordance withmy invention VIV pro-l vide means atthe inner yenol of this catheter 29. `*This iield of visionis more lateralthan the previous fieldxand doesnot include the directly forward view which the sight device of Figures land 2 renderspossible. c In the construction Lof Figure 4,'I'provide an abutment SO'immediately tothe rear of the lamp y25 and varranged attheinner end y of the space vbetween the tubular element26 and the-unfenestratedwall of the tube 22. The abutment 30 may be'suitablyfixed to project from p the unfenestrate'd "wall across' the vinner/end of the catheter space. Itistobe c noted that this abutment presents an inclined guiding surface 31 tov the inserted catheter,r and that it extends across the endoscopic tube 22 to a Vpoint slightly inffront'oi''l the tubular j element 26. Y Y l v v The catheter19,when inserted into theiin-` tip encounter .the inclined guiding surface; 315 and theforwa'rd portion'of the catheterk will thereby be deflected againstthe rounded LV tip 27,`thence across thev inner end of the tubular element 26`and into the illuminated `field of vision. VThe eflicient guidance and i deflection of the catheter is thus effected without any *special:mechanisinwhose movable.r parts would requires'pecialmanipulationandy would'addtothe bulk and" compleXity'of YtheV Y' whole instrument.

.Iii-fFigurefB I hayesliovvn an endoscopic i tube32vwhich issimilar in construction to the tube ofFigure'45 and witht-his tube I have shown a telescopic tubular element V33 em! .-bodyingan Aobjective system similar to kthat ofFi'gures lfand 2. f 'l f In this constructiom the crosssectional Varea of the 'body of ,the ltube 323is slightly greater vthanthe cross-,sectional area ofthe nose 34 Affenestra. arranged along the Vside as in Figure 4 commences at the rear point 35 c tively small cross-section, "A lamp 37 extendsl Vstrument ofFigure J4, willhave 'its foremost'KA of. the relatively largecross-section'and terik minates atthefforwardpoint.36 of the relarearwardly from the nose 34 similar to the lamp 25 of Figure 4.

The inner tubular element 33 is provided with an objective lens 38, which lens com- 5. mands a eld of vision substantially defined by the limits 39 and 40. It Will be noted that this field of vision is similar to the field of Figures 1 and 2, and that the inner limit 39 thereof extends directly forwardly. It is for this reason that the nose portion 34 is made of smaller cross-section, such nose portion being thus positioned immediately outside of the inner limit 39.

A rounded tip 41 is provided upon the tubular element 33; and an abutment 42- is provided to the rear of the lamp 37. The abutment 42 presents an inclined guiding surface 43 to the inserted catheter 19, as set forth hereinbefore. y Y

One position of the catheter 19 is shovvn in Figure 6, and it Will be noted that here,

too, the catheter enters the field of vision in an eiiicient and proper direction suitably in advance of the objective 38. If the deflection is to be decreased in degree, the tubular element 33 may be slightly retracted, and by thereby spacing the rounded tip 41 from the inclined guiding surface 43, the catheter may be made to enter the 'field of vision at a lessV 3o sharp angle.

vIt will thus be seenthat I have provided an instrument of extremely simple structural characteristics, of maximum compactness, and With capabilities of catheter guidance and control Which are not only simple and staunch but also specially reliable. It will also be noted that these advantageous results have been attained Without any resort to delicate and independently actuated deiiecting mech- ,40 anism which Would increase cost, bulk, and

complexity of construction and use.

It Will be obvious that changes in the details herein described and illustrated for the purpose of explaining the nature of my in- 45 vention may be made by those skilled in the art Without departing from the spirit and scope of the invention as expressed in the appended claims. It is therefore intended that these details be interpreted as illustrative,

and not in a limiting sense.

I claim:

1. In a catheterizing instrument, an endoscopic tube having a fenestra toward one side of its inner end, means'for providing illumi- K-nated vision through the endoscopic ytube of the field outside of said fenestra, said means including a tubular element in the endoscopic tube and of smaller cross-section than the latter, said element being spaced from the unlfenestrated side of the endoscopic tube to permit passage of a catheter through said space, and means at the inner end of said space for guiding an inserted catheter across the front end of said tubular element and thence into saidilluminated field.

2. In a catheterizing instrument, an endoI scopic tube having a fenestra toward one side of its inner end, means for providing illuminated vision through the endoscopic tube off the field outside of said fenestra, said means including a tubular element in the endoscopicy tube and of smaller cross-section than the latter,'said element being spaced from the unfenest-rated side of the endoscopic tube to permit passage of a catheter through said space, and means at the inner end of said space for guiding an inserted catheter across the front end of said tubular element and thence into said illuminated field, said lastnamed" meanscomprising an abutmentr projectingv across said space from said unfenestrated side.

3. In a catheterizing instrument, an endoscopic tube having a fenestra Vtoward one yside of its inner end, means for providing illuminated vision through the endoscopic tube of the iield outside of said fenestra, said means including `a tubular element inthe endoscopic tube and of smaller cross-section than the latter, said element kbeing spaced from the unfenestrated side of the endoscopic tube to permit passage of a catheter through said space, and means at the inner end of said space for guiding an inserted catheter acrossl the field outside of said fenestra, said means inciuding atubular element in the endscopic tube and of smaller lcross-section than-f the latter, said element being spaced from the unfenestrated side of the endoscopic tube to permit passage of a catheter through said space, w

and an abutment at the inner end of said space and encounterable by an insertedcatheter to deiiect and guide the latter out of said` fenestra and into said illuminated field, said abutment extending from said unfenestrated side to a point in front of said tubular.- element. l w

5. In a catheterizing instrumentan endo-4 scopic tube having a fenestra toward one side of its inner end, means for providing illumif nated vision through the endoscopic tube'of the iield outside of said fenestra, said means including a tubular element in the endoscopic l tube and of smaller cross-sectionthan'the latter, said element being spacedfromthe unfeiiestrated side of the endoscopic tube to: permit passage of a cathetervthrough said; space, and means at the inner `end of said? space for deflecting and guiding an'inserted' catheter out of said fenestra 'and'.intosaid I i Villuminatedfield, said last-named means comprisinga; yrounded end .on said tubular-ele-v .m means including a longitudinally f' shiftable ffenestrated side;

'ment' and an. abutment spaced from said rounded `end Jand projecting from said` un- 6.-. In. ar catheterizing instrument, an endo' scopic; tube. having a fenestra toward/onesid'e of its inner end, means for providing'illumihated vision-through the "endoscopic tubev Vofi thefiield outside of said enestra, r'said tubular elementffinthe endoscopictube' and y spacedffrom the :unfenestratedr side of the latterto'permitpassage'of acatheter through i said space, and. an abutment at the inner end:

oit-said space' and.l encounterable nby van 1n-` serted` catheter to deiect the vlatter against and across" the A innerendl ofsaid tubular y ele- Y ment `and thence into saidilluminated field', whereby the degreeofcatheter delectionmay be controlled by Vshiftingv said tubular elementyf H f l 7.. In a-catheterizinginstrument,` an endoscopic vtube having a enestra. toward one side of itsv inner end, a telescopic tube within the endoscopic tubeV and, commanding an obliquely'forward field of vision' outside or" saidfenestra, said telescopic tube being spaced rom'theunfe'nestrated side vof the endoscopic .tube to permit passage ofacatheter through ce out-of said enestra andinto said elcl.flg..-J i f '8. In a catheterizih'g instrument,fan endo scopic tube having a enestra toward one side of its inner end, a telescopic tube within the said space and then endoscopic tube and commanding an obliquely .forward field ofvisionoutside ofsaid fenestra, illuminating means in advance 2of and spaced from said telescopic" tube, V the 9..' I'n a catheterizing,instrument, an endoscop'ictube having a itenestraV toward one Y sideof its inner '.end, a longitudinally shifta.- yble telescopic tube'Within the endoscopic tube and commanding'anobliquely forward 'ielfd of vision throughsaid enestra,ga lamp; f in advance'o-f and spaced from the Vtelescopic tube,'s aid lamp beingout ofthe field of vision 1*.*and'2illi'uninating 1 the latter, thei telescopic tube beingspacednfromthe unfenestrated side 'Y ofthe endoscopictube to permit; passage of4 and 'projecting toward saidie'ld,vr Y I y l2. `In a catheterizinginstrument, an edo- 10.v In afcatheterizing instrument, an endoscopic tube havingan obliquely enestrateolr end, means for providing illuminated vision through the endoscopic tube Voffan obliquely forward eld of Vvision outside ofV said ienestra7 Vsaid means comprisingia telescopic tube with `a 'lampfatits forward end, said telescopic tube being spaced'from the long;

est wall of theendosc'opictube to provide a passage fora catheter, and means at the' end of sai-d passagefor d'e'flectingl said catheter linto the illuminatedfield of vision.,v

' l1. In a catheterizing instrument, an endoscopic tube having ,an obliquelyfenestrated end,`means for providing illuminated vision through the endoscopic tube of an obliquely vforward field' of vision outside of said fenestra, said means comprising a telescopic tubewitha lamp at itsforward end,'said tele#V scopic Ytube Abeing spaced from the longest Wall of the endoscopictubetoV provide a passage for a catheter, and means at the end of said passagefor deiiecting said catheter intoA the illuminated field of vision, said lastLA named means comprising V an ,"abutment formed on the'tip of said endoscopic tube scopic tube having obliquely fenestrated end, means orprovidmg illuminated vision through the endoscopic tube'of an obliquely forward Alie'ld of vision. outside of 'sa-idn fenestra, saidl meanscomprising a telescopic tube with ai lampk at its forward-end, said vtelescopic ytube being spaced from thelongejst wall of the endoscopictube to provide a plassage or-a catheter, and means at the endof said passage'for vdeflecting said catheter into the illuminated field of vision, said 'last-"` vnamed means comprising an abutment formed Von thetip of said Vendoscopic tube and projecting toward said field, said abutment beingvinclined yand adapted to deflectA the catheter againstand across the Vtip/oi:`

' catheter tlirough'sai'd space, andan inclined*y abutment behindtheV lamp land 'encounterable' l 'by said catheter, saidl abutment being-adapted [to deflect'the catheter against and across the' front end ofithe telescopicV tube and thenceV intosa'id illuminatedfjield,whereby the de- Y gree odelection may bek controlled by shiftingtheltelescopc tube., I

I V41 i12-1.0i` 

